Remove "autorun.inf" and solve the problem of hard disk and removable usb drives not opening by double clicking

Drives not opening automatically when double clicked is due to a trojan or virus having put an "autorun.inf" on all your drives. Even if you try to remove it by manually deleting from Windows, it still stays. To delete it, follow these steps :-

Go to Start --> Programs --> Accessories
Take Command prompt
or [ Start --> Run (or Win key + R) and type cmd ]

In the Command Prompt Window type the following commands

cd\
attrib autorun.inf -s -h -r
del autorun.inf

now autorun.inf in your root drive is removed. For deleting autorun.inf in other hard disk drives and usb removable drives or pen drives, type the following commands in the command prompt window itself :-

[drive letter]: ( if drive letter is D, then type D: )
attrib autorun.inf -s -h -r
del autorun.inf

Repeat the above step for all drives

For pen drives, Safely Remove pen drives and plug it again.
For HDD drives, Restart the computer.
Thats it. Your drives will open normally when double-clicked.

To avoid virus from entering your computer the next time you plug in a pen drive, hold 'Shift' while inserting the flash drive for 5 to 10 seconds to disable autoplay feature temporarily. Then using the above commands, delete autorun.inf from your pen drive.

You can also disable Autoplay feature as such from your computer by editing group policy in Windows XP Professional but I don't recommend it to beginning users or amateurs. To edit group policy, Go to Start --> Run and type gpedit.msc